On Sat, 25 Sep 1999 19:19:07 +0200 
 Ignatios Souvatzis <ignatios@cs.uni-bonn.de> wrote:

 > the i82595TX does not have any official FDX support. However, it has an
 > "external loopback" mode, where it can transmit and receive simultaneously.
 > 
 > Is this enough to do 10baseT-FDX, as long as I don't want autonegotiation,
 > which I guess can't work with this?

Yes, that should be sufficient to do 10baseT-FDX.  There's nothing really
magical about full-duplex mode.

Hopefully, the chip turns off collision detection when you enable this
feature (I would assume it does).

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>